Nonisolated ZVT Two-Inductor Boost Converter With a Single Resonant Inductor for High Step-Up Applications
- Authors
- Lee, Kui-Jun; Park, Byoung-Gun; Kim, Rae-Young; Hyun, Dong-Seok
- Issue Date
- Apr-2012
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Boost converter; interleaved; resonant; two-inductor; zero-voltage transition (ZVT)
- Citation
- IEEE TRANSACTIONS ON POWER ELECTRONICS, v.27, no.4, pp.1966 - 1973
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON POWER ELECTRONICS
- Volume
- 27
- Number
- 4
- Start Page
- 1966
- End Page
- 1973
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/165914
- DOI
- 10.1109/TPEL.2011.2165970
- ISSN
- 0885-8993
- Abstract
- The interleaved operation of a two-inductor boost converter system is a very attractive solution for converting the low input voltage (30-50 V) of distributed power sources, such as photovoltaic and fuel cells, to the high output voltage (380-760 V) required in grid-connected power-conversion applications. However, a soft-switching method is required in the two main switches to increase the overall power conversion efficiency. This paper proposes a zero-voltage-transition (ZVT) two-inductor boost converter using a single resonant inductor to meet these needs. To satisfy the requirement of soft switching in the two main switches, a resonant cell is constructed at the output side with a bidirectional switch, two auxiliary diodes, and a single resonant inductor. This converter has the advantages of simple circuitry, reduced size, and low cost due to a single resonant inductor. The validity of the proposed ZVT two-inductor boost converter is verified through experimental results.
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